Caroline Dinenage: The hon. Lady is absolutely right to talk about this. IVF has made a massive difference to families up and down this country. I know that she has worked long and hard on this particular issue, for which I thank her. Health professionals always have a duty to act in the best interests of the patients whom they care for, and fertility treatment is no exception. The Human Fertilisation and Embryology Authority is leading work to better understand OHSS, and it will be supporting clinics to ensure that care is of a higher standard.